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Sun ZG, Zhang HZ. [Recurrence pattern of pathological complete response after neoadjuvant chemoradiotherapy in locally advanced rectal cancer]. Zhonghua Wei Chang Wai Ke Za Zhi 2024; 27:365-371. [PMID: 38644242 DOI: 10.3760/cma.j.cn441530-20240125-00042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/23/2024]
Abstract
Patients with locally advanced rectal cancer who undergo neoadjuvant chemoradiotherapy may achieve pathological complete response (pCR). The incidence of recurrence is low among patients with pCR, there is still a lack of consensus on postoperative treatment and follow-up strategy. This review summarizes the recurrence patterns of patients with pCR, including distant metastasis rate, characteristics of distant metastasis time and location, local recurrence rate, and local recurrence time. The aim is to provide reference for the postoperative treatment and follow-up strategy of patients with pCR. Patients with pCR have a low recurrence rate, with infrequent local recurrence. Distant metastasis is the most common recurrence pattern, primarily in the lung and secondly in the regional lymph node. The time of recurrence is delayed which suggests the need for appropriate adjustments to follow-up strategy, extending the follow-up period, and placing emphasis on monitoring sites prone to recurrence.
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Affiliation(s)
- Z G Sun
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - H Z Zhang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, State Key Laboratory of Molecular Oncology, Beijing 100021, China
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Zhang HZ, Lu JH, Shi ZY, Guo YR, Shao WH, Meng FX, Zhang R, Zhang AH, Xu J. Donor hepatic artery reconstruction based on human embryology: A case report. World J Gastrointest Surg 2023; 15:1825-1830. [PMID: 37701685 PMCID: PMC10494588 DOI: 10.4240/wjgs.v15.i8.1825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 06/20/2023] [Accepted: 07/11/2023] [Indexed: 08/25/2023] Open
Abstract
BACKGROUND Embryonic hepatic artery anatomy simplifies its identification during liver transplantation. Injuries to the donor hepatic artery can cause complications in this process. The hepatic artery's complex anatomy in adults makes this step challenging; however, during embryonic development, the artery and its branches have a simpler relationship. By restoring the embryonic hepatic artery anatomy, surgeons can reduce the risk of damage and increase the procedure's success rate. This approach can lead to improved patient outcomes and lower complication rates. CASE SUMMARY In this study, we report a case of donor liver preparation using a donor hepatic artery preparation based on human embryology. During the preparation of the hepatic artery, we restored the anatomy of the celiac trunk, superior mesenteric artery, and their branches to the state of the embryo at 5 wk. This allowed us to dissect the variant hepatic artery from the superior mesenteric artery and left gastric artery during the operation. After implanting the donor liver into the recipient, we observed normal blood flow in the donor hepatic artery, main hepatic artery, and variant hepatic artery, without any leakage. CONCLUSION Donor hepatic artery preparation based on human embryology can help reduce the incidence of donor hepatic artery injuries during liver transplantation.
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Affiliation(s)
- He-Zhao Zhang
- Faculty of Graduate Studies, Shanxi Medical University, Taiyuan 030000, Shanxi Province, China
| | - Jun-Hui Lu
- Faculty of Graduate Studies, Shanxi Medical University, Taiyuan 030000, Shanxi Province, China
| | - Zhi-Yong Shi
- Department of Hepatopancreatobiliary Surgery, First Hospital of Shanxi Medical University, Taiyuan 030000, Shanxi Province, China
| | - Ya-Rong Guo
- Department of Oncology, First Hospital of Shanxi Medical University, Taiyuan 030000, Shanxi Province, China
| | - Wen-Hao Shao
- Faculty of Graduate Studies, Shanxi Medical University, Taiyuan 030000, Shanxi Province, China
| | - Fan-Xiu Meng
- Faculty of Graduate Studies, Shanxi Medical University, Taiyuan 030000, Shanxi Province, China
| | - Rui Zhang
- Department of Hepatopancreatobiliary Surgery, First Hospital of Shanxi Medical University, Taiyuan 030000, Shanxi Province, China
| | - An-Hong Zhang
- Department of Hepatopancreatobiliary Surgery, First Hospital of Shanxi Medical University, Taiyuan 030000, Shanxi Province, China
| | - Jun Xu
- Department of Hepatopancreatobiliary Surgery, First Hospital of Shanxi Medical University, Taiyuan 030000, Shanxi Province, China
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Sun ZG, Xiang RS, Zhang Q, Luo ZK, Feng L, Fang H, Zhu YL, Zhang HZ. [Study on the recurrence pattern of rectal cancer patients undergoing radical surgery after neoadjuvant chemoradiotherapy]. Zhonghua Yi Xue Za Zhi 2023; 103:1836-1841. [PMID: 37357189 DOI: 10.3760/cma.j.cn112137-20230407-00560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/27/2023]
Abstract
Objective: To analyze the recurrence pattern of rectal cancer patients with radical surgery after neoadjuvant chemoradiotherapy. Methods: The clinicopathological characteristics and follow-up information of rectal cancer patients with radical surgery after neoadjuvant chemoradiotherapy in the Cancer Hospital of the Chinese Academy of Medical Sciences from June 2004 to December 2017 were retrospectively collected. The recurrence pattern including the time and site was investigated. Results: The age of 537 patients was (55.5±11.7) years, of whom 361 were male (67.2%). The median follow-up time [M(Q1,Q3)] was 77.9 (64.5, 95.6) months. Moreover, 30.7% (165/537) of patients had distant metastasis or local recurrence; 26.8% (144/537) of patients had distant metastasis; 5.6% (30/537) of patients had local recurrence; 1.7% (9/537) of patients had both distant metastasis and local recurrence. In all the recurrent patients, 23.6% (39/165) were in the first year after surgery, followed by 27.3% (45/165) in the second year, 17.0% (28/165) in the third year, and 15.8% (26/165) after five years. According to the risk curve drawn by the life table, the highest metastasis risk of patients occurred in the second year after surgery, and the metastasis risk peak occurred again after more than five years. The lung was the most common metastatic organ, accounting for 47.9% (69/144), followed by the liver (18.8%, 27/144). The ratios of the recurrent patients in each ypTNM stage were 9.5% (8/84), 12.0% (12/100), 26.5% (41/155), 52.5% (104/198), respectively. The proportion of recurrent patients in tumor regression grade (TRG) 1-2 and TRG 3-5 patients were 19.2% (38/198) and 37.5% (127/339), respectively. Conclusions: The recurrence pattern of patients undergoing radical surgery after neoadjuvant chemoradiotherapy is mainly distant metastasis. The lung is the primary metastatic organ. The risk of distant metastasis and local recurrence is high in the first three years after surgery, and there is still high risk of recurrence after five years. For patients with ypTNM stage 2, 3 and TRG3-5, the postoperative adjuvant chemotherapy and long-term follow-up should be strengthened.
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Affiliation(s)
- Z G Sun
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - R S Xiang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Q Zhang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Z K Luo
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - L Feng
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - H Fang
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y L Zhu
- Department of Pathological Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - H Z Zhang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, State Key Laboratory of Molecular Oncology, Beijing 100021, China
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Sun ZG, Luo ZK, Xiang RS, Zhang Q, Feng L, Fang H, Zhu YL, Zhang HZ. [A long-term follow-up study on recurrence and benefit of standardized postoperative chemotherapy of rectal cancer patients with complete pathological response after neoadjuvant chemoradiotherapy]. Zhonghua Yi Xue Za Zhi 2023; 103:1546-1552. [PMID: 37246004 DOI: 10.3760/cma.j.cn112137-20230312-00384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Objective: To analyze the clinicopathological factors affecting long-term disease-free survival and the characteristics of local recurrence or distance metastasis of rectal cancer patients with complete pathological response after neoadjuvant chemoradiotherapy. Methods: The clinicopathological data and follow-up information of patients with a complete pathological response of rectal cancer after neoadjuvant chemoradiotherapy in the Cancer Hospital of Chinese Academy of Medical Sciences from June 2004 to December 2019 were retrospectively collected. The clinicopathological factors affecting the long-term disease-free survival of patients were analyzed to build a prediction model of local recurrence and distant metastasis and to evaluate the benefits of postoperative chemotherapy. Results: The age of 108 patients was(56.3±11.6) years, of which 68 were males (63.0%); The median follow-up time was 79.9 (61.8, 112.6) months. There were 12 patients (11.1%) who had a local recurrence or distant metastasis. The 5-year disease-free survival rate was 91.1% with 9 patients who experienced recurrence. Multivariate Cox proportional hazards regression analysis showed that the maximum diameter of the residual tumor or scar (HR=8.41, 95%CI: 1.08-65.22, P=0.042) and the distance from the lower edge of the tumor to the anal margin before treatment (HR=4.54, 95%CI: 1.23-16.81, P=0.023) were independent risk factors affecting the prognosis. The prognosis of patients was stratified based on relevant factors. The 5-year cumulative disease-free survival rate of those patients receiving postoperative standardized chemotherapy was 92.0%, while for patients who did not receive or complete standardized chemotherapy, the 5-year cumulative disease-free survival rate was 82.3%. Conclusions: The maximum diameter of the residual tumor or scar and the distance from the lower edge of the tumor to the anal margin before treatment were independent risk factors affecting the prognosis of patients with a complete pathological response. Patients with independent risk factors could benefit from the standardized postoperative chemotherapy.
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Affiliation(s)
- Z G Sun
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Z K Luo
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - R S Xiang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Q Zhang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - L Feng
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - H Fang
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y L Zhu
- Department of Pathological Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - H Z Zhang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, State Key Laboratory of Molecular Oncology, Beijing 100021, China
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Zhang R, Zhang HZ, Han T, Wei ZG, Shi ZY, Xu J. Effect of accessory hepatic artery reconstruction on prognosis in orthotopic liver transplantation: a single center experience. BMC Surg 2023; 23:138. [PMID: 37208662 DOI: 10.1186/s12893-023-02021-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 04/28/2023] [Indexed: 05/21/2023] Open
Abstract
BACKGROUND In orthotopic liver transplantation (OLT), preserving an aberrant hepatic artery (AHA) can increase the number of arterial anastomoses and may lead to arterial-related complications. AHA includes accessory hepatic artery and replaced hepatic artery. Herein, the purpose of our research is to evaluate the requirement for accessory anastomosis in OLT. METHODS We retrospectively reviewed a total of 95 patients who underwent OLT in our hospital between April 2020 and December 2022. We found seven cases of donor livers with accessory HA. The method of arterial anastomosis and details of the diagnosis and treatment of complications were collated. RESULTS Among 95 consecutive patients with OLT, complications occurred in two of seven patients-patient 2 had an accessory right hepatic artery, while patient 5 had an accessory left hepatic artery. Patient 2 showed bile leakage leading to rupture and bleeding of the accessory HA anastomosis after OLT, and was treated with interventional coil embolization. In patient 5, hepatic artery thrombosis and accessory HA occlusion were treated with embolization and thrombolysis of the splenic artery and left gastric artery. During the intervention, we also found that the internal hepatic artery and accessory HA had communicating branches. After treatment, both patients remain healthy with no complications such as liver necrosis or liver abscess. CONCLUSION An AHA can be ligated when assessed as an accessory artery. This can reduce the incidence of arterial complications, contribute to the perioperative management of liver transplantation (LT) patients, and improve the prognosis of LT.
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Affiliation(s)
- Rui Zhang
- Department of Hepatobiliary and Pancreatic Surgery, Liver Transplantation Center, The First Hospital of Shanxi Medical University, No. 56 Xinjian South Road, Shanxi Province, 030001, Taiyuan, China
| | - He-Zhao Zhang
- Department of Hepatobiliary and Pancreatic Surgery, Liver Transplantation Center, The First Hospital of Shanxi Medical University, No. 56 Xinjian South Road, Shanxi Province, 030001, Taiyuan, China
| | - Tian Han
- Department of Hepatobiliary and Pancreatic Surgery, Liver Transplantation Center, The First Hospital of Shanxi Medical University, No. 56 Xinjian South Road, Shanxi Province, 030001, Taiyuan, China
| | - Zhi-Gang Wei
- Department of Hepatobiliary and Pancreatic Surgery, Liver Transplantation Center, The First Hospital of Shanxi Medical University, No. 56 Xinjian South Road, Shanxi Province, 030001, Taiyuan, China
| | - Zhi-Yong Shi
- Department of Hepatobiliary and Pancreatic Surgery, Liver Transplantation Center, The First Hospital of Shanxi Medical University, No. 56 Xinjian South Road, Shanxi Province, 030001, Taiyuan, China
| | - Jun Xu
- Department of Hepatobiliary and Pancreatic Surgery, Liver Transplantation Center, The First Hospital of Shanxi Medical University, No. 56 Xinjian South Road, Shanxi Province, 030001, Taiyuan, China.
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Huang J, Luo YL, Bai YQ, Jiao Q, Chen J, Jiang ZM, Liu ZY, Zhang HZ. [Fibrocartilaginous mesenchymoma: a clinicopathological analysis of four cases]. Zhonghua Bing Li Xue Za Zhi 2023; 52:25-30. [PMID: 36617902 DOI: 10.3760/cma.j.cn112151-20221026-00886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Objective: To investigate the clinical, radiological, histological and molecular features and the differential diagnosis of fibrocartilaginous mesenchymoma (FM). Methods: Four cases of FM diagnosed in the Department of Pathology, the Sixth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine from 2020 to 2022 were analyzed. Related literature was also reviewed. Results: Case 1 was a 10-year-old girl with bone destruction in the sacrum and L5 articular processes revealed by CT scan. Case 2 was a 7-year-old girl with an aggressive lesion in her right distal ulna. Case 3 was an 11-year-old boy with a lesion in the metaphysis of his left proximal tibia. Case 4 was an 11-year-old boy with bone destruction in the distal portion of a radius. Microscopically, the four tumors all consisted of numerous spindle cells, hyaline cartilage nodules, and bone trabeculae. The hypocellular to moderately cellular spindle cell component contained elongated cells with slightly hyperchromatic, mildly atypical nuclei arranged in bundles or intersecting fascicles. Benign-appearing cartilaginous nodules of various sizes and shapes were scattered throughout the tumors. There were areas mimicking epiphyseal growth-plate characterized by chondrocytes arranged in parallel columns and areas of enchondral ossification. The stroma was rich in mucus in case 1. Mutation of GNAS and IDH1/IDH2 and amplification of MDM2 gene were not found in any of the three tested cases. Conclusions: FM is very rare and tends to affect young patients. It most frequently occurs in the metaphysis of long tubular bones, followed by the iliac-pubic bones and vertebrae. FM is characterized by a mixed population of spindle cells, hyaline cartilage nodules and trabeculae of bone, without specific immunophenotypes and molecular alternations. As a borderline, locally aggressive neoplasm, surgical removal with a wide margin is generally the treatment of choice for FM.
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Affiliation(s)
- J Huang
- Department of Pathology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200233, China
| | - Y L Luo
- Department of Pathology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200233, China
| | - Y Q Bai
- Department of Pathology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200233, China
| | - Q Jiao
- Department of Pathology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200233, China
| | - J Chen
- Department of Pathology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200233, China
| | - Z M Jiang
- Department of Pathology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200233, China
| | - Z Y Liu
- Department of Pathology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200233, China
| | - H Z Zhang
- Department of Pathology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200233, China
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Xie JH, Liu MM, Sun NN, Zhang L, Zhang HZ. [Effect of dNLR and LIPI scores on the prognosis of elderly patients with non-surgical treatment of non-small cell lung cancer]. Zhonghua Zhong Liu Za Zhi 2022; 44:975-980. [PMID: 36164700 DOI: 10.3760/cma.j.cn112152-20200423-00371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Objective: To investigate the effects of derived neutrophil to lymphocyte ratio (dNLR) and lung immune prognostic index (LIPI) score on the overall survival (OS) of non-surgical elderly non-small cell lung cancer (NSCLC) patients. Methods: Clinical and pathological data of NSCLC patients in Hebei General Hospital from January 2014 to June 2018 were collected retrospectively. The dNLR value was calculated based on the results of blood routine before treatment, and the optimal cut-off value of dNLR was obtained by ROC curve. The patients were divided into low dNLR level group and high dNLR level group based on the optimal dNLR cut-off value. The groups were classified as good, intermediate and poor based on the LIPI score consisting of lactate dehydrogenase (LDH) and dNLR tested before treatment. The Kaplan-Meier method and Log rank test were used for survival analysis, and the Cox risk proportional regression model was used for analysis of prognostic influences. Results: The area under the ROC curve for dNLR predicting prognosis in non-surgical elderly NSCLC patients was 0.591 (95% CI: 0.491, 0.692; P=0.093). The optimal cut-off value for dNLR predicting prognosis in elderly NSCLC patients was 2.515, with a sensitivity of 45.5% and a specificity of 81.8%. The gender, BMI, pathological type and degree of tumor differentiation were associated with dNLR levels (P<0.05). The median survival times were 16 and 10 months for patients in the low dNLR level group (dNLR<2.51) and high dNLR level group (dNLR≥2.51), respectively (P<0.001), and 15, 10 and 6 months for patients with good, intermediate and poor LIPI scores, respectively (P<0.001). The age, gender, smoking, pathological type, tumor differentiation, clinical stage, BMI, dNLR level, LDH level and LIPI scores were all associated with patient prognosis (P<0.05), and age≥76 years, tumor differentiation and clinical stage Ⅲ and Ⅳ were independent factors influencing patient prognosis (P<0.05). Conclusion: No matter what treatment measures are taken, dNLR level and LIPI score are related to patients' prognosis, and non-surgical elderly NSCLC patients with high dNLR level and poor LIPI score before treatment have worse prognoses.
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Affiliation(s)
- J H Xie
- Graduate College, North China University of Science and Technology, Tangshan 063210, China
| | - M M Liu
- The Fifth Department of Oncology, Hebei General Hospital, Shijiazhuang 050051, China
| | - N N Sun
- Graduate College, North China University of Science and Technology, Tangshan 063210, China
| | - L Zhang
- Graduate College, North China University of Science and Technology, Tangshan 063210, China
| | - H Z Zhang
- The Fifth Department of Oncology, Hebei General Hospital, Shijiazhuang 050051, China
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Zang XY, Qiao B, Meng FH, Jin NH, Hu SX, Li LB, Xing LJ, Chen F, Wang Y, Zhang HZ. [A deep learning segmentation model for detecting caries in molar teeth]. Zhonghua Yi Xue Za Zhi 2022; 102:2538-2540. [PMID: 36008325 DOI: 10.3760/cma.j.cn112137-20220422-00895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
This study aimed to build a home use deep learning segmentation model to identify the scope of caries lesions. A total of 494 caries photographs of molars and premolars collected via endoscopy were selected. Subsequently, these photographs were labeled by physicians and underwent segmentation training by using DeepLabv3+, and then verification and evaluation were performed. The mean accuracy was 0.993, the sensitivity was 0.661, the specificity was 0.997, the Dice coefficient was 0.685, and the intersection over union (IoU) was 0.529. Therefore, the present deep learning segmentation model can identify and segment the scope of caries.
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Affiliation(s)
- X Y Zang
- Department of Stomatology, the First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - B Qiao
- Department of Stomatology, the First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - F H Meng
- Department of Stomatology, the First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - N H Jin
- Department of Stomatology, the First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - S X Hu
- Department of Stomatology, the First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - L B Li
- Department of Stomatology, the First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - L J Xing
- Department of Stomatology, the First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - F Chen
- Department of Stomatology, the First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Y Wang
- Department of Stomatology, the First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - H Z Zhang
- Department of Stomatology, the First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
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Su XY, Sun WP, Yuan JQ, Li LX, Jiang ZM, Zhang HZ. [Sarcoma arising in fibrous dysplasia: a clinicopathological analysis]. Zhonghua Bing Li Xue Za Zhi 2022; 51:733-737. [PMID: 35922163 DOI: 10.3760/cma.j.cn112151-20220524-00439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To study the clinicopathologic characteristics and risk factors of sarcoma arising in fibrous dysplasia. Methods: A total of 18 cases were collected from January 2008 to July 2018 in Shanghai Jiaotong University Affiliated Sixth People's Hospital. The characteristics and the histologic type were retrospectively reviewed. IBM SPSS 19 was used for statistical analysis. Results: The male to female ratio of patients with fibrodysplastic sarcomatosis was 1.57∶1.00. The age of onset ranged from 24 to 87 years (mean 49 years). The long bones, especially the femur, were most frequently involved. Nine cases were osteosarcomas, three cases were high grade sarcoma and six cases were low grade sarcoma. Logistic regression analysis showed that age was an independent risk factor for sarcomatous change, compared with polyostotic or recurrent cases. Value of Wals was 13.61 (P<0.05), and odds ratio was 12.82,95% confidence interval was 3.31-49.70. Conclusions: Fibrodysplasia sarcomatosis is clinically nonspecific and the risk of sarcomatous changes increases approximately 12-fold when age of onset of fibrous dysplasia is over 40 years.
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Affiliation(s)
- X Y Su
- Department of Pathology, the Second Affiliated Hospital of Nanchang University, Nanchang 330006, China Department of Pathology, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - W P Sun
- Department of Interventional Radiology, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - J Q Yuan
- Department of Pathology, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - L X Li
- Department of Pathology, the Second Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Z M Jiang
- Department of Pathology, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - H Z Zhang
- Department of Pathology, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai 200233, China
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Zhang HZ, Xia QY, Yin XG, Wang SY. [Eosinophilic vacuolated tumor of the kidney: clinicopathological and molecular characteristics]. Zhonghua Bing Li Xue Za Zhi 2022; 51:437-443. [PMID: 35511640 DOI: 10.3760/cma.j.cn112151-20210908-00660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To study the clinicopathological features, immunophenotype, molecular changes, differential diagnosis and prognosis of eosinophilic vacuolated tumor (EVT) of the kidney. Methods: Four cases were collected retrospectively from 2014 to 2020 at Ningbo Diagnostic Pathology Center. The clinicopathologic features and immunophenotypic profile were studied by light microscopy and immunohistochemistry. Targeted next-generation sequencing (NGS) panel was used to detect cancer-associated mutation. Follow-up and literature review were also performed. Results: Among the 4 patients studied,2 were males and 2 were females. The age of the patients ranged from 44 to 63 years (the mean age: 51 years).Tumor size ranged from 1.5 to 4.2 cm (mean: 2.3 cm). Microscopically, tumors were well-circumscribed, unencapsulated. Thick-walled vessels and entrapped renal tubules were found within or at the periphery of the tumors. The tumors were predominantly composed of nest pattern, and focal tubular pattern. The tumor cells exhibited abundant, eosinophilic, granular cytoplasm and conspicuous, large nucleoli. Prominent intracytoplasmic vacuoles were seen. These cytoplasmic vacuoles varied in size and frequently coalesced into a large space. Loose fibromatous or hyaline stroma was focally noted. Immunohistochemically, the tumor cells in all cases exhibited a CD117+/CK7-phenotype. All cases were positive for CD10 and p504s. MTOR, S6 and cathepsin K were positive in 4 cases. TFE3, CA9, Melan A and HMB45 were negative in all cases. SDHB retained expression. NGS demonstrated MTOR mutations in all cases, and TSC2 mutation in 2 cases. Conclusions: EVT is a rarely oncocytic renal tumor with unique morphology, immunohistochemical phenotype, molecular profile and an indolent behavior. Recognition of the characteristics of this novel but rare entity will allow for better classification of renal tumors.
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Affiliation(s)
- H Z Zhang
- Department of Pathology, Ningbo Diagnostic Pathology Center, Ningbo 315000, China
| | - Q Y Xia
- Department of Pathology, Nanjing Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, China
| | - X G Yin
- Department of Pathology, Ningbo Diagnostic Pathology Center, Ningbo 315000, China
| | - S Y Wang
- Department of Pathology, Ningbo Diagnostic Pathology Center, Ningbo 315000, China
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Hao N, Zhou J, Li MM, Luo WW, Zhang HZ, Qi QW, Jiang YL, Zhou XY, Yang K, Chen H, Pan HJ, Zhu JT, Liu J. [Efficacy and initial clinical evaluation of optical genome mapping in the diagnosis of structural variations]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:632-639. [PMID: 35644979 DOI: 10.3760/cma.j.cn112150-20220212-00131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
To investigate the efficacy and value of optical genome mapping (OGM) in detecting chromosomal structural variations. In a clinical study about high-precision analysis of genomic structural variation for complex genetic diseases, a retrospective study was performed on the cases with karyotyping at the department of Obstetrics and Gynecology, and Endocrinology of Peking Union Medical College Hospital from January to December 2021. Ten cases with abnormal karyotype was detected by OGM. Partial cases were verified by fluorescence in situ hybridization (FISH), SNP array or CNV-seq. Results of ten cases, nine were detected with abnormality by OGM, including unbalanced chromosomal rearrangements (n=3), translocation (n=5) and paracentric inversion (n=1), and the results were in concordance with other standard assays. However, one case with breakpoint and reconnected at centromere has not been detected. In conclusion, ten samples were comprehensively analyzed by karyotyping, FISH, SNP array or CNV-seq, and OGM, and results demonstrated that optical genome mapping as a new technology can not only detect unbalanced rearrangements such as copy number variants as well as balanced translocations and inversions, but more importantly, it can refine breakpoints and orientation of duplicated segments or insertions. So it can contribute to the diagnosis of genetic diseases and prevent birth defect. However, the current technology is not yet capable of detecting breakpoints of balanced structural variations lying within unmapped regions.
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Affiliation(s)
- N Hao
- Department of Obstetrics and Gynecology, Chinese Academy of Medical Sciences & Peking Union Medical College, National Clinical Research Center for Obstetric & Gynecologic Diseases, Beijing 100730, China
| | - J Zhou
- Department of Obstetrics and Gynecology, Chinese Academy of Medical Sciences & Peking Union Medical College, National Clinical Research Center for Obstetric & Gynecologic Diseases, Beijing 100730, China
| | - M M Li
- Department of Obstetrics and Gynecology, Chinese Academy of Medical Sciences & Peking Union Medical College, National Clinical Research Center for Obstetric & Gynecologic Diseases, Beijing 100730, China
| | - W W Luo
- Department of Obstetrics and Gynecology, Chinese Academy of Medical Sciences & Peking Union Medical College, National Clinical Research Center for Obstetric & Gynecologic Diseases, Beijing 100730, China
| | - H Z Zhang
- Department of Obstetrics and Gynecology, Chinese Academy of Medical Sciences & Peking Union Medical College, National Clinical Research Center for Obstetric & Gynecologic Diseases, Beijing 100730, China
| | - Q W Qi
- Department of Obstetrics and Gynecology, Chinese Academy of Medical Sciences & Peking Union Medical College, National Clinical Research Center for Obstetric & Gynecologic Diseases, Beijing 100730, China
| | - Y L Jiang
- Department of Obstetrics and Gynecology, Chinese Academy of Medical Sciences & Peking Union Medical College, National Clinical Research Center for Obstetric & Gynecologic Diseases, Beijing 100730, China
| | - X Y Zhou
- Department of Obstetrics and Gynecology, Chinese Academy of Medical Sciences & Peking Union Medical College, National Clinical Research Center for Obstetric & Gynecologic Diseases, Beijing 100730, China
| | - K Yang
- Key Laboratory of Endocrinology of National Health Commission, Department of Endocrinology, State Key Laboratory of Complex Severe and Rare Diseases, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100730, China
| | - H Chen
- Key Laboratory of Endocrinology of National Health Commission, Department of Endocrinology, State Key Laboratory of Complex Severe and Rare Diseases, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100730, China
| | - H J Pan
- Key Laboratory of Endocrinology of National Health Commission, Department of Endocrinology, State Key Laboratory of Complex Severe and Rare Diseases, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100730, China
| | - J T Zhu
- Key Laboratory of Endocrinology of National Health Commission, Department of Endocrinology, State Key Laboratory of Complex Severe and Rare Diseases, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100730, China
| | - Juntao Liu
- Department of Obstetrics and Gynecology, Chinese Academy of Medical Sciences & Peking Union Medical College, National Clinical Research Center for Obstetric & Gynecologic Diseases, Beijing 100730, China
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12
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Zhang HZ, Qin HY, Zhang WX, Huang L, Zhang XD. Moiré graphene nanoribbons: nearly perfect absorptions and highly efficient reflections with wide angles. Opt Express 2022; 30:2219-2229. [PMID: 35209367 DOI: 10.1364/oe.445348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 12/29/2021] [Indexed: 06/14/2023]
Abstract
The strong absorption and reflection from atomically thin graphene nanoribbons has been demonstrated over the past decade. However, due to the significant band dispersion of graphene nanoribbons, the angle of incident wave has remained limited to a very narrow range. Obtaining strong absorption and reflection with a wide range of incident angles from atomically thin graphene layers has remained an unsolvable problem. Here, we construct a tunable moiré superlattice composed of a pair of graphene nanoribbon arrays to achieve this goal. By designing the interlayer coupling between two graphene nanoribbon arrays with mismatched periods, the moiré flat bands and the localization of their eigen-fields was realized. Based on the moiré flat bands of graphene nanoribbons, highly efficient reflection and nearly perfect absorption was achieved with a wide range of incident angles. Even more interesting, is how these novel phenomena can be tuned through the adjustment of the graphene's Fermi energy, either electrostatically or chemically. Our designed moiré graphene nanoribbons suggest a promising platform to engineer moiré physics with tunable behaviors, and may have potential applications in the field of wide-angle absorbers and reflectors in the mid-infrared region.
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Wu YL, Zhang QQ, Shen SH, Li DD, Zhu YL, Zhang HZ. [The risk factors for regional lymph node metastasis of mismatch repair deficient colorectal cancer]. Zhonghua Zhong Liu Za Zhi 2021; 43:1082-1087. [PMID: 34695899 DOI: 10.3760/cma.j.cn112152-20210109-00032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the risk factors for regional lymph node (RLN) metastasis in colorectal cancer patients with mismatch repair deficiency (dMMR). Methods: The data of 357 dMMR colorectal cancer patients who underwent surgery in National Cancer Center from January 2012 to December 2016 was retrospectively analyzed. Univariate and multivariate analysis were used to identify the risk factors for RLN metastasis. Results: Among the 357 patients, 204 were male and 153 were female, 61.6% (220/357) lesion located in right half colon, while the other 16.2% (58/357) located in rectum. Univariate analysis showed that tumor size, differentiation, lymphovascular invasion, tumor deposit, postoperative pathologic T stage (pT), the number of negative lymph nodes and the expression of the MSH6 protein were significantly associated with RLN metastasis (P<0.05). All of the patients with well differentiation tumors (15 patients) or staged pT1 (13 patients) had no RLN metastasis. Multivariate analysis showed that tumor differentiation (OR=2.582, 95%CI=1.567-4.274, P<0.001), pT (OR=3.778, 95%CI=1.448-12.960, P=0.015) and the expression of MSH6 protein (OR=2.188, 95%CI=1.159-4.401, P=0.021) were independent risk factors for RLN metastasis. Conclusions: The postoperative pT stage, tumor differentiation and the expression of MSH6 protein are independent risk factors for RLN metastasis of dMMR colorectal cancer. Preoperative assessment of these factors may further improve the accuracy of predicting the risk of RLN metastasis.
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Affiliation(s)
- Y L Wu
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Q Q Zhang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - S H Shen
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - D D Li
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y L Zhu
- Department of Pathology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - H Z Zhang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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14
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Zhang HZ, Ding ZX, Shen MW, Xiao YN, Peng ZH, Shen HB. [Advance on theoretical epidemiology models research of prevention and control of COVID-19]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:1256-1262. [PMID: 34706514 DOI: 10.3760/cma.j.cn112150-20210310-00241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
COVID-19 has brought a significant impact to the global health system, and also opportunities and challenges to epidemiological researches. Theoretical epidemiological models can simulate the process of epidemic in scenarios under different conditions. Therefore, modeling researches can analyze the epidemical trend of COVID-19, predict epidemical risks, and evaluate effects of different control measures and vaccine policies. Theoretical epidemiological modeling researches provide scientific advice for the prevention and control of infectious diseases, and play a crucial role in containing COVID-19 over the past year. In this study, we review the theoretical epidemiological modeling researches on COVID-19 and summarize the role of theoretical epidemiological models in the prevention and control of COVID-19, in order to provide reference for the combination of mathematical modeling and epidemic control.
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Affiliation(s)
- H Z Zhang
- Department of Epidemiology and Health statistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Z X Ding
- China International Cooperation Center, Nanjing Medical University, Nanjing 210029, China
| | - M W Shen
- China-Australia Joint Research Center for Infectious Diseases, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - Y N Xiao
- Center for the Intersection of Mathematics and Life Sciences, School of Mathematics and Statistics, Xi'an Jiaotong University, Xi'an 710049, China
| | - Z H Peng
- China International Cooperation Center, Nanjing Medical University, Nanjing 210029, China
| | - H B Shen
- Department of Epidemiology and Health statistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China
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Zhang HZ, Wang SY, Dong L, Yang XQ, Wang CF. [Inflammatory myofibroblastic tumors of the urinary bladder: a clinicopathological study of ten cases]. Zhonghua Bing Li Xue Za Zhi 2021; 50:1024-1028. [PMID: 34496493 DOI: 10.3760/cma.j.cn112151-20210113-00039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
0bjective To investigate the clinicopathological features,immunohistochemical phenotypes, molecular genetic alterations,diagnosis and differential diagnosis of inflammatory myofibroblastic tumor (IMT) of the urinary bladder. Methods: Ten cases of IMT of the urinary bladder (three cases at Ningbo Diagnostic Pathology Center from September 2011 to December 2020, five in-house diagnosed cases and two consultation cases at Shanghai Rui Jin Hospital from June 2011 to December 2020) were collected retrospectively. The clinicopathologic features and immunophenotypic profiles were studied by light microscopy and immunohistochemistry (EnVision method). The translocation of ALK gene was detected by fluorescence in situ hybridization (FISH). Results: Of the 10 patients, eight were male and two were female. The patients' age range was 16 to 62 years (median 36 years).The main clinical presentation was hematuria and urinary irritation. Three cases were located at the dome of the urinary bladder, four cases were in the left lateral wall and the remaining three cases were in the right lateral wall. The tumor size ranged from 1.5 cm to 8.5 cm. In eight cases, the tumors were mainly submucosal, and in some cases extending to the muscular layer of the urinary bladder. In two cases, the tumors were mainly located in the muscular layer and focally extended to the submucosa and adventitia. Histologically, four cases had the nodular fasciitis-like pattern, three cases had fibrohistiocytoma-like pattern, two cases had mixed histologic patterns and the remaining case showed leiomyosarcoma-like histologic features. Immunohistochemically, the tumor cells expressed SMA (10/10),calponin (9/10),desmin (6/10) and CKpan (9/10). Cytoplasmic staining for ALK1 and ALK (5A4) was detected in 7 of 10 cases and 8 of 10 cases, respectively. Nuclear and cytoplasmic staining for ALK (D5F3) was detected in 7 of 10 cases. Among eight cases with material available for FISH analysis, ALK rearrangement was present in five cases. Follow-up data were available in eight patients and none had local recurrence nor distant metastasis. Conclusion: IMT of the urinary bladder is an uncommon mesenchymal neoplasm with intermediate malignant potential.It has special clinicopathologic features, and a minority of cases have local tumor recurrence.
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Affiliation(s)
- H Z Zhang
- Department of Pathology, Ningbo Diagnostic Pathology Center, Zhejiang Province, Ningbo 315000, China
| | - S Y Wang
- Department of Pathology, Ningbo Diagnostic Pathology Center, Zhejiang Province, Ningbo 315000, China
| | - L Dong
- Department of Pathology, Rui Jin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200020, China
| | - X Q Yang
- Department of Pathology, Rui Jin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200020, China
| | - C F Wang
- Department of Pathology, Rui Jin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200020, China
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Zhang QQ, Wu YL, Li DD, Shen SH, Fang H, Zhu YL, Zhang HZ. [Clinicopathological and prognostic features of young onset patients with middle-low rectal cancer received neoadjuvant chemoradiotherapy]. Zhonghua Zhong Liu Za Zhi 2021; 43:574-580. [PMID: 34034478 DOI: 10.3760/cma.j.cn112152-20201220-01083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the clinicopathological and prognostic features of young onset patients with middle-low rectal cancer who received neoadjuvant chemoradiotherapy (NCRT). Methods: After NCRT, a total of 441 patients with primary middle-low rectal cancer treated with radical surgery at the Cancer Hospital, Chinese Academy of Medical Sciences (CHCAMS) from January 2004 to December 2016 were included. According to the age of disease onset, the patients were divided into the young group (51cases) and the middle-old group (390 cases), and the clinicopathological characteristics and survival of these patients were analyzed. Results: In the young group, 68.6% of patients received radical surgery within 7 weeks after NCRT, which was higher than 52.8% in the middle-old group (P=0.047). The stage ypTNM Ⅲ in the young group was 51.0%, higher than 34.1% in the middle-old group (P=0.027). The stage ypN+ in the young group was 51.0%, higher than 34.1% in the middle-old group (P=0.047), The incidence of disease progression in the young group was 39.2%, higher than 25.1% in the middle-old group (P=0.049). The incidence of distant metastasis in the young group was 35.3%, higher than 21.5% in the middle-old group(P=0.044). Most cases of disease progression occurred in the first 3 years after surgery for the young group, especially in the second year after surgery, the incidence of disease progression in the young group was 55.0%, higher than 26.5% in middle-old group (P=0.025). The 3-year and 5-year disease-free survival (DFS) rates for the young group were 63.7% and 58.2%, lower than 81.0% and 74.3% in the middle-old group (P=0.016), respectively. The 3-year and 5-year overall survival in the middle-old group (OS) rates for the young group were 85.4% and 69.2%, lower than 93.6% and 84.1% in the middle-old group (P=0.033), respectively. The multivariate analysis showed that, response of primary tumor (HR=4.804, 95% CI: 1.360-16.973) and total number of dissected lymph nodes (HR=4.336, 95% CI: 1.739-10.809) in the young group were independent prognostic factors related to DFS. The total dissected number of lymph nodes(HR=3.295, 95% CI: 1.076-10.091)was an independent prognostic factor related to OS. In the middle-old group, response of primary tumor (HR=2.626, 95% CI: 1.354-5.091), ypTNM stage (ypTNM Ⅲ: HR=5.837, 95% CI: 2.968-11.479) and tumor location distance from the anal verge (HR=0.500, 95% CI: 0.308-0.812) were independent prognostic factors related to DFS. Lymphovascular invasion (HR=0.500, 95% CI: 0.308-0.812) and ypTNM stage (ypTNM Ⅲ: HR=16.322, 95% CI: 5.049-52.771) were independent prognostic factors related to OS. Conclusions: Young onset rectal cancer patients are associated with shorter operation time interval, advanced pathological stage and poorer prognosis. More intensive adjuvant treatment and post-treatment surveillance should be conducted to young onset rectal cancer with NCRT.
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Affiliation(s)
- Q Q Zhang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y L Wu
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - D D Li
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - S H Shen
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - H Fang
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y L Zhu
- Department of Pathological Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - H Z Zhang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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Li DD, Zhang QQ, Wu YL, Shen SH, Fang H, Zhu YL, Zhang HZ. [Clinicopathological characteristics and prognostic analysis of patients with pathological complete response and near complete response after neoadjuvant treatment of rectal cancer]. Zhonghua Yi Xue Za Zhi 2021; 101:1357-1362. [PMID: 34015870 DOI: 10.3760/cma.j.cn112137-20210104-00009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the clinicopathological characteristics and prognosis of rectal cancer patients with pathological complete response and near complete response after neoadjuvant therapy. Methods: The clinicopathological data of patients who underwent neoadjuvant chemoradiotherapy plus radical surgery of rectal cancer in the Cancer Hospital of Chinese Academy of Medical Sciences from January 2004 to December 2016 were retrospectively collected. The clinicopathological characteristics and prognostic factor of patients with pathological complete response and near complete response were analyzed. Results: The clinical data of 142 patients were collected. There were 93 males and 49 females, aged from 24 to 81 years. The median disease-free survival was 53.9 months and the median overall survival was 55.0 months. Univariate analysis showed that the maximum diameter of scar or lesion, the status of lymph node metastasis and the distance between the lower edge of tumor and anal edge were associated with disease-free survival time; the maximum diameter of scar or lesion and the status of lymph node metastasis were associated with overall survival time. Multivariate Cox proportional hazards regression analysis showed that patients with scar or lesion diameter>3 cm (HR=4.406,95%CI:1.619-12.006), positive lymph node metastasis status (HR=4.102,95%CI:1.461-11.513) and tumor lower margin to anal margin distance ≤4 cm (HR=18.171,95%CI:2.357-140.073) had shorter disease-free survival time.The patients with scar or lesion diameter>3 cm (HR=8.573,95%CI:1.630-45.099) and lymph node metastasis status (HR=4.721, 95%CI:1.068-20.860) had shorter overall survival time. Conclusions: The overall prognosis of patients with pathological complete response or near complete response after neoadjuvant therapy for rectal cancer is better. The distance between the lower margin of the tumor and the anal edge, the status of lymph node metastasis and the maximum diameter of scars or lesion were the related factors affecting the prognosis of patients with rectal cancer.
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Affiliation(s)
- D D Li
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Q Q Zhang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y L Wu
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - S H Shen
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - H Fang
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y L Zhu
- Department of Pathological Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - H Z Zhang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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Huang J, Yang TT, Jiang ZM, Zhang HZ. [Clinicopathological features of notochordal tumors: a study of 48 cases]. Zhonghua Bing Li Xue Za Zhi 2021; 50:201-206. [PMID: 33677882 DOI: 10.3760/cma.j.cn112151-20201202-00891] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the clinicopathological features, diagnosis and differential diagnosis of notochordal tumors. Methods: The clinical, radiologic and pathologic data of 48 notochordal tumors were collected from 2008 to 2019 at Shanghai Jiaotong University Sixth People's Hospital. Expression of cytokertin, S-100 protein, vimentin, brachyury and INI1 was detected by immunohistochemistry. The pathologic differential diagnoses and biologic behavior of various types of notochordal tumors were analyzed using the new standard in the 5th edition of WHO tumor classification. Results: Four cases of benign notochordal cell tumor were confined to vertebral body. Histopathologically, they lacked lobular architecture and extracellular myxoid matrix. The tumor cells were vacuolated and had centrally or peripherally located round to oval nuclei, with small nucleoli, without atypia, mimicking mature adipocytes. No mitotic figures were seen. Two cases of poorly differentiated chordoma, from patients aged 12 years and 21 years respectively, were located in cervical vertebra, and were composed of cohesive sheets or nests of epithelioid cells, with focal rhabdoid morphology. There was relatively abundant eosinophilic cytoplasm and scattered cytoplasmic vacuoles. The moderately pleomorphic nuclei were round to ovoid with vesicular chromatin and mitotic figures could be seen. Extracellular myxoid stroma was observed focally. Forty cases of conventional chordoma and two cases of extra-axis chordoma had similar histologic features. All 48 cases expressed cytokeretin, 45 cases expressed brachyury, and two poorly differentiated tumors showed loss of INI1/SMARCB1. Conclusions: There are four subtypes of chordomas: conventional, dedifferentiated, poorly differentiated and extra-axis. Chondroid chordoma is no longer thought to be a distinct entity. Each type has its unique clinicopathological characteristics. Brachyury is highly specific and sensitive for the diagnosis of various notochordal tumors. Poorly differentiated chordoma shows distinct clinicopathological features, including young age and loss of immunohistochemical expression of INI1/SMARCB1, and its diagnosis requires the combined detection of brachyury and INI1/SMARCB1.
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Affiliation(s)
- J Huang
- Department of Pathology, Shanghai Sixth People's Hospital, Affiliated to Shanghai Jiaotong University, Shanghai 200233, China
| | - T T Yang
- Department of Pathology, Shanghai Sixth People's Hospital, Affiliated to Shanghai Jiaotong University, Shanghai 200233, China
| | - Z M Jiang
- Department of Pathology, Shanghai Sixth People's Hospital, Affiliated to Shanghai Jiaotong University, Shanghai 200233, China
| | - H Z Zhang
- Department of Pathology, Shanghai Sixth People's Hospital, Affiliated to Shanghai Jiaotong University, Shanghai 200233, China
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Ren HJ, Zhang JP, Tian RX, Wang GF, Gu GS, Hong ZW, Wu L, Zheng T, Zhang HZ, Ren JA. [Analysis of the effect of transgluteal percutaneous drainage in the treatment of deep pelvic abscess]. Zhonghua Wei Chang Wai Ke Za Zhi 2021; 23:1177-1181. [PMID: 33353273 DOI: 10.3760/cma.j.cn.441530-20201103-00588] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the safety and feasibility of transgluteal percutaneous drainage using double catheterization cannula in the treatment of deep pelvic abscess. Methods: A retrospective analysis of the clinical data of patients who underwent transgluteal percutaneous drainage using double catheterization cannula with deep pelvic abscesses admitted to the Jinling Hospital from May 2017 to September 2020 was conducted. Seven patients were enrolled, including 5 males and 2 females, who aged 26-74 (median 53.0) years old, and all of them had digestive fistula. One male patient was punctured again due to the tube falling off, and a total of 7 patients underwent 8 times of transgluteal percutaneous drainage, all under the guidance of CT. The puncture and drainage steps of the double catheterization cannula group are as follows: (1) Locate the puncture point under CT in the lateral position; (2) Place the trocar into the abscess cavity; (3) Confirm that the trocar is located in the abscess cavity under CT; (4) Pull out the inner core and insert into the double catheterization cannula through the operating hole; (5) Confirmthat the double catheterization cannula is located in the abscess cavity under CT; (6) The double catheterization cannula is properly fixed to prevent it from falling off. The white blood cells, C-reactive protein (CRP), procalcitonin, and interleukin-6 (IL-6) of all patients before the drainage and 1 days, 3 days, and 5 days after the drainage were collected, as well as the bacterial culture results of the drainage fluid. The changes of various infection biomarkers before and after the drainage were compared. Results: All 7 patients were cured. No complications such as hemorrhage and severe pain were observed. The average time with drainage tube was 60.8 (18-126) days. Five patients finally underwent gastrointestinal reconstruction surgery due to gastrointestinal fistula. The median serum interleukin-6 of patients before drainage, 1 day, 3 days and 5 days after drainage were 181.6 (113.0, 405.4) μg/L, 122.2 (55.8, 226.0) μg/L, 59.2 (29.0,203.5) μg/L and 64.1 (30.0,88.4) μg/L, respectively.The level of serum interleukin-6 at 3 days and 5 days after drainage was significantly lower than before drainage (F=3.586, P=0.026). Although the white blood cell count, C-reactive protein, and procalcitonin decreased gradually after drainage compared with before drainage, the difference was not statistically significant (all P>0.05). Conclusion: Transgluteal percutaneous drainage with double catheterization cannula is simple and effective, and can be used for the treatment of deep pelvic abscess.
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Affiliation(s)
- H J Ren
- Department of General Surgery, Jinling Hospital, Nanjing, Jiangsu 210002, China
| | - J P Zhang
- Department of General Surgery, Jinling Hospital, Nanjing, Jiangsu 210002, China
| | - R X Tian
- Department of General Surgery, Jinling Hospital, Nanjing, Jiangsu 210002, China
| | - G F Wang
- Department of General Surgery, Jinling Hospital, Nanjing, Jiangsu 210002, China
| | - G S Gu
- Department of General Surgery, Jinling Hospital, Nanjing, Jiangsu 210002, China
| | - Z W Hong
- Department of General Surgery, Jinling Hospital, Nanjing, Jiangsu 210002, China
| | - L Wu
- Department of General Surgery, Jinling Hospital, Nanjing, Jiangsu 210002, China
| | - T Zheng
- Department of General Surgery, Nanjing BenQ Hospital, Nanjing, Jiangsu 210000, China
| | - H Z Zhang
- Department of General Surgery, Huazhong University of Science and Technology Union Shenzhen Hospital, Shenzhen, Guangdong 518000, China
| | - J A Ren
- Department of General Surgery, Jinling Hospital, Nanjing, Jiangsu 210002, China
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Meng FH, Zhu ZH, Lei ZH, Zhang XH, Shao L, Zhang HZ, Zhang T. Feasibility of the application of mixed reality in mandible reconstruction with fibula flap: A cadaveric specimen study. J Stomatol Oral Maxillofac Surg 2021; 122:e45-e49. [PMID: 33434746 DOI: 10.1016/j.jormas.2021.01.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 12/02/2020] [Accepted: 01/04/2021] [Indexed: 11/16/2022]
Abstract
BACKGROUND In recent years, a new technology, mixed reality (MR), has emerged and surpassed the limitations of augmented reality (AR) with its inability to interact with hologram. This study aimed to investigate the feasibility of the application of MR in mandible reconstruction with fibula flap. METHODS Computed tomography (CT) examination was performed for one cadaveric mandible and ten fibula bones. Using professional software Proplan CMF 3.0 (Materialize, Leuven, Belgium), we created a defected mandibular model and simulated the reconstruction design with these 10 fibula bones. The surgical plans were transferred to the HoloLens. We used HoloLens to guide the osteotomy and shaping of the fibular bone. After fixing the fibular segments using the Ti template, all segments underwent a CT examination. Before and after objects were compared for measurements of the location of fibular osteotomies, angular deviation of fibular segments, and intergonial angle distances. RESULTS The mean location of the fibular osteotomies, angular deviation of the fibular segments, and intergonial angle distances were 2.11 ± 1.31 mm, 2.85°± 1.97°, and 7.24 ± 3.42 mm, respectively. CONCLUSION The experimental results revealed that slight deviations remained in the accuracy of fibular osteotomy. With the further development of technology, it has the potential to improve the efficiency and precision of the reconstructive surgery.
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Affiliation(s)
- F H Meng
- Chinese PLA General Hospital, Department of Oral and Maxillofacial Surgery, 100853, Beijing, China
| | - Z H Zhu
- Peking Union Medical College Hospital, Department of Oral and Maxillofacial Surgery, 100730, Beijing, China
| | - Z H Lei
- Peking Union Medical College Hospital, Department of Oral and Maxillofacial Surgery, 100730, Beijing, China
| | - X H Zhang
- Shenzhen Luohu Hospital Group Luohu People's Hospital, Department of Oral and Maxillofacial Surgery, 518020, Shenzhen, China
| | - L Shao
- Beijing Institute of Technology, Optoelectronic College, 100081, Beijing, China
| | - H Z Zhang
- Chinese PLA General Hospital, Department of Oral and Maxillofacial Surgery, 100853, Beijing, China.
| | - T Zhang
- Peking Union Medical College Hospital, Department of Oral and Maxillofacial Surgery, 100730, Beijing, China.
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Huang AP, Zhang HZ, Cui L, Geng JQ, Wen X, Wang J, Song YL. [Analysis on clinical characteristics, diagnosis and treatment of 13 cases of infant hairy polyp]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2020; 55:850-854. [PMID: 32911888 DOI: 10.3760/cma.j.cn115330-20200212-00079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore and analyze the clinical characteristics, diagnosis and treatment of infant hairy polyp. Methods: A retrospective analysis was made on 13 cases of hairy polyp confirmed by pathology, who were admitted to the Children's Hospital of Hebei Province from January 2010 to September 2019, including 4 males and 9 females, with a male-female ratio of 1∶2.25. The age ranged from 3 hours to 1 year, and the median age was 1 month. Twelve of the 13 children were found to have difficulty breathing or feeding. All the children received coblation resection under general anesthesia. The root pedicle of the mass was found in the lateral nasopharyngeal wall in 8 cases, in the junction of palatine and palatopharyngeal arch of tonsil and the tongue and esophageal entrance in 1 case, respectively. Nasal septum was found in 2 cases, including 1 case located between two incisors. The wound at the root pedicle was ablated and the bleeding was stopped completely. Results: Postoperative follow-up lasted from 3 months to 2 years, and there was no recurrence in 12 cases. Fibrolaryngoscope showed a mass of the right eustachian tube and pharyngeal mouth in 1 case 2 years after the surgery, which was considered recurrence of hairy polyps and lost after that. Conclusion: Hairy polyps in infants is a rare clinical disease, and its main symptom is upper respiratory tract obstruction. Early diagnosis and radical surgery are the key to the treatment of the disease.
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Affiliation(s)
- A P Huang
- Department of Otolaryngology, Children's Hospital of Hebei Province, Shijiazhuang 050030, China
| | - H Z Zhang
- Department of Otolaryngology, the Second Hospital of Hebei Medical University, Shijiazhuang 050005, China
| | - L Cui
- Department of Otolaryngology, Children's Hospital of Hebei Province, Shijiazhuang 050030, China
| | - J Q Geng
- Department of Otolaryngology, Children's Hospital of Hebei Province, Shijiazhuang 050030, China
| | - X Wen
- Department of Otolaryngology, Children's Hospital of Hebei Province, Shijiazhuang 050030, China
| | - J Wang
- Department of Otolaryngology, Children's Hospital of Hebei Province, Shijiazhuang 050030, China
| | - Y L Song
- Department of Otolaryngology, Children's Hospital of Hebei Province, Shijiazhuang 050030, China
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Chen TY, Ge YL, Liu XW, Zhu YQ, Chen ZM, Tian L, Zhu YY, Zhang X, Zhang HZ. [Molecular epidemiological characteristics of methicillin-resistant Staphylococcus aureus during 2017-2018 at a hospital in Shanghai]. Zhonghua Yu Fang Yi Xue Za Zhi 2020; 54:849-853. [PMID: 32842314 DOI: 10.3760/cma.j.cn112150-20190819-00669] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To identify the epidemic clones of MRSA isolates at a hospital in shanghai. Methods: A total of 72 MRSA isolates have been isolated from a second grade hospital between 2017 and 2018, including 32 CA-MRSA isolates, 13 HA-MRSA isolates and 26 MRSA isolates from environment. In this study, MLST and PFGE typing methods were used to analyze the molecular epidemiology of the MRSA isolates. Results: A total of 72 MRSA isolates have been obtained including 46 isolates from clinical specimens, 26 isolates from environments. The 46 MRSA isolates from clinical specimens consisted of 33 CA-MRSA (community-acquired MRSA) and 13 HA-MRSA (hospital-acquired MRSA). Furthermore, these patients infected with MRSA isolates were mostly distributed in the department of geriatrics (34.8%, 16/46), internal medicine (26.1%, 12/46) and surgery (26.1%, 12/46). MLST typing results showed that ST764 was predominant in isolates from both clinical specimens and hospital environments. Furthermore, PFGE typing results showed that most ST764 MRSA had high homolog (>90%). Conclusion: ST764 MRSA isolates might spread in community, hospital and environments. Therefore, continuous monitoring of MRSA and its variation may be useful in understanding the involvement of epidemic clone, and in searching new strategies to control MRSA infection.
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Affiliation(s)
- T Y Chen
- Department of Pathogenic identification, Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
| | - Y L Ge
- Department of Pathogenic identification, Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
| | - X W Liu
- Department of Pathogenic identification, Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
| | - Y Q Zhu
- Department of Pathogenic identification, Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
| | - Z M Chen
- Department of Pathogenic identification, Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
| | - L Tian
- Department of Acute Communicable Disease Control and Prevention, Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
| | - Y Y Zhu
- Department of Pathogenic identification, Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
| | - X Zhang
- Department of Pathogenic identification, Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
| | - H Z Zhang
- Department of Pathogenic identification, Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
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Cao JJ, Ji XN, Mao YY, Zhang PP, Liu WT, Zhang HZ, Ding N, Chen Q. [Clinical and genetic characteristics of children with STXBP1 encephalopathy]. Zhonghua Er Ke Za Zhi 2020; 58:493-498. [PMID: 32521962 DOI: 10.3760/cma.j.cn112140-20191028-00683] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Objective: To investigate the clinical and genetic characteristics of developmental and epileptic encephalopathy (DEE) caused by syntaxin-binding protein 1 (STXBP1) gene mutation. Methods: The clinical data, gene variation and treatment outcome of 15 children with STXBP1 encephalopathy admitted to Children's Hospital Affiliated to Capital Institute of Pediatrics from January 2014 to June 2019 were analyzed retrospectively. Results: Among 15 patients, 11 were male and 4 were female, age ranged from 2 months to 69 months. The clinical manifestations of 14 children were epilepsy and developmental delay (DD) and the remaining one showed developmental delay without seizure. The onset age of epilepsy ranged from two days to 19 months and 11 of them experienced the first attack before 1 year of age. The common seizure types were epileptic spasms and tonic seizures. Seven patients were diagnosed with Ohtahara syndrome or West syndrome. Epileptic form discharges were observed in the interictal electroencephalograms (EEG) of 11 patients, including multifocal discharges, suppression-burst and hypsarrhythmia. The brain magnetic resonance imaging of 7 children were abnormal, including myelin dysplasia, less white matter, lack of corpus callosum or hypoplasia. The follow-up time ranged from 2 months to 57 months, after the last follow-up, 3 cases were seizure free, 6 children showed partial response and the other 5 patients had no response on multitherapy. Six of 8 patients showed good responses to levetiracetam (LEV) monotherapy or in combination with other antiepileptic drugs (AEDs). Vigabatrin (VGB) was applied to 5 patients with epileptic spasms and 4 of them showed response. All patients showed different degrees of developmental delay while four of them showed autistic features. STXBP1 gene mutations were identified in all cases and there were 15 types of gene variations, including 8 missense mutations, 1 nonsense mutation, 5 frame shift mutations and 1 complex mutation. Five novel mutations were unreported before, including c.1193A>G, c.172delG, c.1769C>T, c.1038_1039delCC, c.348_351dupTGAA. Conclusions: Development delay and epilepsy are the major and independent clinical phenotypes in children with STXBP1 encephalopathy. The variation of STXBP1 gene is mainly de novo. Levetiracetam and vigabatrin may be more effective in epilepsy control than other AEDs.
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Affiliation(s)
- J J Cao
- Department of Neurology, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - X N Ji
- Department of Neurology, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - Y Y Mao
- Department of Neurology, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - P P Zhang
- Department of Neurology, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - W T Liu
- Department of Neurology, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - H Z Zhang
- Department of Neurology, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - N Ding
- Department of Neurology, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - Q Chen
- Department of Neurology, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
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24
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Shu F, Zhang HZ, Cai JQ, Xu MQ, Jiang SS. [Clinical characteristics and efficacy analysis of secondary benign paroxysm positional vertigo after middle ear surgery]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2020; 34:79-82. [PMID: 32086905 PMCID: PMC10128579 DOI: 10.13201/j.issn.1001-1781.2020.01.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Indexed: 11/12/2022]
Abstract
Objective:To investigate the clinical characteristics and therapeutic effect of benign paroxysm positional vertigo(BPPV) secondary to middle ear surgery. Method:A total of 1 126 patients who underwent tympanoplasty or radical mastoidectomy due to chronic suppurative otitis media and middle ear cholesteatoma in our hospital from January 2014 to December 2018 were collected. Clinical data of BPPV within 1 month after surgery were collected, The incidence, incidence side, involved semicircular canal, onset time, age of onset, and duration of operation of secondary BPPV after middle ear surgery were analyzed. All patients with secondary BPPV were treated by manual reduction, and the efficacy was evaluated 1 day, 1 week, and 1 month after reduction. Result:2.13% (24 cases) of patients had secondary BPPV after operation, among which 2 cases were parietal incidence. 18 cases were involved in posterior semicircular canals and 6 cases were horizontal semicircular canals. The onset time was 1-12 days after the operation, with an average of (3.29±2.44) days. The mean age of onset was (51.62±10.15) years old, and there was no statistically significant difference between the age of patients without BPPV after middle ear surgery (P>0.05). The average operating time was (97.29±14.78) minutes, showing no statistically significant difference compared with patients in the group without BPPV (P>0.05). Fourteen cases (58.3%) were cured and 10 cases were improved after 1 day evaluation. Evaluated 1 week after treatment, 19 cases (79.17%) were cured and 5 cases were improved. Evaluated 1 month after treatment, all patients were cured without recurrence. Conclusion:BPPV secondary to middle ear surgery often appears 3 days after surgery, and the posterior semicircular canal of the operative ear is most commonly involved. Age and operation duration have no significant influence on the incidence of BPPV, and satisfactory therapeutic effect can be obtained through manipulative reduction.
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Affiliation(s)
- F Shu
- Department of Otolaryngology Head and Neck Surgery,Zhujiang Hospital,Southern Medical University,Guangzhou,510282,China
| | - H Z Zhang
- Department of Otolaryngology Head and Neck Surgery,Zhujiang Hospital,Southern Medical University,Guangzhou,510282,China
| | - J Q Cai
- Department of Otolaryngology Head and Neck Surgery,Zhujiang Hospital,Southern Medical University,Guangzhou,510282,China
| | - M Q Xu
- Department of Otolaryngology Head and Neck Surgery,Zhujiang Hospital,Southern Medical University,Guangzhou,510282,China
| | - S S Jiang
- Department of Otolaryngology Head and Neck Surgery,Zhujiang Hospital,Southern Medical University,Guangzhou,510282,China
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Bai YQ, Yang TT, Zhang HZ. [The study of the value of H3F3A G34W immunohistochemical staining in the diagnosis of giant cell tumor of bone]. Zhonghua Bing Li Xue Za Zhi 2019; 48:531-536. [PMID: 31288308 DOI: 10.3760/cma.j.issn.0529-5807.2019.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the diagnostic role of H3F3A G34W immunohistochemistry in giant cell tumor of bone. Methods: A total of 275 tumors were collected from 2016 to 2018 at Shanghai Jiaotong University Affiliated Sixth People's Hospital, including 136 giant cell tumors of bone, 31 general osteosarcomas, 3 osteoclast-rich osteosarcomas, 3 brown tumors, 34 chondroblastomas, 29 giant cell tumors of tendon sheath, 20 primary arteromatoid bone cysts and 19 non-ossifying fibromas. Results: Among the 136 cases of giant cell tumor of bone,82 patients were male and 54 were female. The age ranged from 15 to 72 years (median age 38 years). Nuclear positivity for H3F3A G34W was seen in 119/136(87.5%) giant cell tumors of bone and 1/31(3.2%) general osteosarcoma,while all osteoclast-rich osteosarcomas, brown tumors, chondroblastomas, giant cell tumors of tendon sheath, primary arteromatoid bone cysts and non-ossifying fibroma were negative. Conclusions: The monoclonal antibody against the G34W mutated site of H3F3A is a specific biomarker for giant cell tumor of bone and useful for the diagnosis and differential diagnosis of giant cell tumor of bone. Meanwhile,for those cases in which giant cell tumor of bone are diagnosed basing on clinical,pathologic and radiographic features but are negative for H3F3A G34W,should be tested for rare mutations or H3F3A wild type.
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Affiliation(s)
- Y Q Bai
- Department of Pathology, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai 200233, China
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Zhang HZ, Yang XQ, Wang SY, Shen XH, Wang SY. [Clinicopathological features of seven cases with intravascular large B cell lymphoma]. Zhonghua Bing Li Xue Za Zhi 2019; 48:385-387. [PMID: 31104679 DOI: 10.3760/cma.j.issn.0529-5807.2019.05.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- H Z Zhang
- Department of Pathology, Ningbo Diagnostic Pathology Center, Zhejiang Province, Ningbo 315000, China
| | - X Q Yang
- Department of Pathology, Ruijin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200020, China
| | - S Y Wang
- Department of Pathology, Ningbo Diagnostic Pathology Center, Zhejiang Province, Ningbo 315000, China
| | - X H Shen
- Department of Pathology, Ningbo Diagnostic Pathology Center, Zhejiang Province, Ningbo 315000, China
| | - S Y Wang
- Department of Pathology, Ningbo Diagnostic Pathology Center, Zhejiang Province, Ningbo 315000, China
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Mou JM, Chen PF, He YX, Yip TL, Li WH, Tang J, Zhang HZ. Vessel traffic safety in busy waterways: A case study of accidents in western shenzhen port. Accid Anal Prev 2019; 123:461-468. [PMID: 27498240 DOI: 10.1016/j.aap.2016.07.037] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2015] [Revised: 07/06/2016] [Accepted: 07/26/2016] [Indexed: 06/06/2023]
Abstract
Throughout the world, busy waterways near large ports witness heavy vessel traffic in recent decades. The waterways are characterized by high risk in terms of loss of life, property, and pollution to environment. To facilitate maritime safety management with satisfactory efficiency and efficacy, the authors propose a framework of safety indexes to evaluate the risk level in busy waterways according to the accident severity, fatality rate and special indicators of maritime transportation. The safety indexes consist of Safety Evaluation Index (SEI) and Safety Warning Index (SWI), and are derived from the proposed risk criteria of Chinese vessel traffic. As a case study, data on vessel traffic accidents reported in the Western Shenzhen Port, South China from 1995 to 2015 are analyzed. The actual risk level of this area during the period is calculated under the framework. The implementation of the safety indexes indicate that the risk criteria and safety indexes are practicable and effective for the vessel traffic management. The methodology based on long-term accident data can significantly support the risk analysis in the macroscopic perspective for busy ports and waterways, such that SWI can act as threshold to trigger actions, while SEI can act as an indicator to measure safety status.
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Affiliation(s)
- J M Mou
- Hubei Key Laboratory of Inland Shipping Technology, Wuhan, China; Wuhan University of Technology, Wuhan, China.
| | - P F Chen
- Hubei Key Laboratory of Inland Shipping Technology, Wuhan, China; Wuhan University of Technology, Wuhan, China
| | - Y X He
- Hubei Key Laboratory of Inland Shipping Technology, Wuhan, China; Wuhan University of Technology, Wuhan, China
| | - Tsz Leung Yip
- C.Y. Tung International Centre for Maritime Studies, Department of Logistics and Maritime Studies, Faculty of Business, Hong Kong Polytechnic University, Hong Kong
| | - W H Li
- Shenzhen Maritime Safety Administration, Shenzhen, China
| | - J Tang
- Shenzhen Maritime Safety Administration, Shenzhen, China
| | - H Z Zhang
- Shenzhen Maritime Safety Administration, Shenzhen, China
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Abstract
Extracellular adenosine is a key signaling molecule which mediates immune suppression, angiogenesis, and regulates cancer cells growth. The effect of adenosine on cervical cancer cells migration and invasion has not been well studied. In the current study, we used Hela and SiHa cell lines to evaluate the effects of adenosine on cervical cancer cells migration, invasion, and apoptosis. The results showed that adenosine treatment inhibited the migration and invasion activities of Hela and SiHa cells. Moreover, by determining the expression of molecules which were involved in epithelial to mesenchymal transition (EMT) progress, we found that epithelial marker E-cadherin was significantly increased in response to adenosine treatment, while the mesenchymal markers including N-cadherin and fibronectin were decreased. These data suggested that adenosine inhibited cervical cancer cells via repressing the EMT progress. The flow cytometry analysis showed that adenosine could also induce cervical cancer cell apoptosis, which mechanism was further confirmed by investigating the expression levels of apoptosis related molecules, via activating mitochondrial apoptosis pathway. These data might suggest that adenosine could be used as an agent for the treatment of cervical cancer.
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Ma SY, Li C, Zhao HB, Zhang JY, Zhang HZ, Wu KL, Li M. [Comparison of clinical outcomes of frozen-thawed blastocysts derived from non-pronucleus or two pronucleus zygotes]. Zhonghua Fu Chan Ke Za Zhi 2018; 53:749-754. [PMID: 30453421 DOI: 10.3760/cma.j.issn.0529-567x.2018.11.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the application value of the blastocysts derived from non-pronucleus (0PN) zygotes by the good quality blastocyst formation rate and the clinical outcomes of frozen-thawed blastocyst transfers. Methods: The good quality blastocyst formation rate derived from 0PN zygotes was compared with that derived from2 pronucleus (2PN) zygotes in in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI) cycles from January 2015 to December 2016. In addition, the clinical pregnancy, embryo implantation and live birth rates of frozen-thawed blastocyst transfers with blastocysts derived from 0PN and 2PN zygotes were analyzed on corresponding dates. Results: (1) In IVF cycles, the high quality blastocysts formation rate of 2PN embryos was significantly higher than that of 0PN (46.64% versus 42.42%, P<0.01) . In ICSI cycles, the high quality blastocysts formation rate of 2PN embryos was markedly higher than that of 0PN (41.96% versus 21.73%, P<0.01) . (2) In frozen-thawed embryo transfer cycles for IVF, the clinical pregnancy, implantation and live birth rates of D5 0PN blastocysts were significantly higher than those of D6 2PN (52.64% versus 46.78%, 49.91% versus 41.20%, 46.54% versus 39.56%, all P<0.05) , however, the abortion and newborn abnormal rates of D5 0PN blastocysts were lower than those of D6 2PN blastocysts (17.37% versus 23.36%, 1.31% versus 4.21%, both P<0.05) ; the clinical pregnancy, implantation and livebirth rates of D5 2PN blastocysts were significantly higher than those of D5 0PN (59.73% versus 52.64%, 55.95% versus 49.91%, 53.03% versus 46.54%, all P<0.05) , but newborn abnormal rate was a little higher than that of D5 0PN (3.90% versus 1.31%, P<0.05) ; the clinical pregnancy, implantation and live birth rates of D5 2PN blastocysts were significantly higher than those of D6 2PN (59.73% versus 46.78%, 55.95% versus 41.20%, 53.03% versus 39.56%, all P<0.05) , and the abortion rate of D5 2PN blastocysts was lower than that of D6 2PN blastocysts (18.23% versus 23.36%, P<0.05) . Conclusions: Although the blastocysts derived from 0PN could be transffered, the blastocysts derived from 2PN zygotes are preferred in all cycles. In IVF cycles, the good quality blastocysts derived from 2PN or 0PN zygotes will be transferred.
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Affiliation(s)
- S Y Ma
- IVF Laboratory, Hospital for Reproductive Medicine Affiliated to Shandong University, Jinan 250021, China
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30
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Huang D, Li ZS, Fan XS, Wu HM, Liu JP, Sun WY, Li SS, Hou YY, Nie X, Li J, Qin R, Guo LC, Xu JH, Zhang HZ, Sun MM, Guo QN, Yang YH, Liu YH, Qin Y, Zhang LJ, Li JH, Zhang ZH, Gao P, Li YJ, Sheng WQ. [HER2 status in gastric adenocarcinoma of Chinese: a multicenter study of 40 842 patients]. Zhonghua Bing Li Xue Za Zhi 2018; 47:822-826. [PMID: 30423604 DOI: 10.3760/cma.j.issn.0529-5807.2018.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigation HER2 status in gastric adenocarcinoma of Chinese and contributing factors to the HER2 expression. Methods: HER2 status of 40 842 gastric adenocarcinomas and clinical data were retrospectively collected from 23 hospitals dated from 2013 to 2016. The association between HER2 positivity and clinicopathologic features was analyzed. Results: Of the 40 842 patients the median age was 62 years, the male female ratio was 2.6∶1.0. The rate of HER2 positivity was 8.8% (3 577/40 842). HER2 expression was related to the tissue type, tumor location, Lauren classification and tumor differentiation (P values: 0.009, 0.001, <0.01 and <0.01, respectively). Different HER2 expression status was observed between primary and recurrent tumors in 7.6% (48/635) cases. The rates of HER2 positivity ranged from 2% to 10% among different institutions. The rates of HER2 FISH amplification were dramatically different among the 23 hospitals (0-100%) with an average rate of 10% (810/8 156) in patients with HER2 IHC 2+ . Conclusions: HER2 expression is associated with clinicopathologic characteristics. HER2 re-assessment of tumor tissue and use of in situ hybridization techniques increase HER2 positivity. The current retrospective study should reflect the HER2 status in gastric adenocarcinoma of Chinese patients.
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Affiliation(s)
- D Huang
- Department of Pathology, Cancer Hospital, Fudan University, Shanghai 200032, China
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Zheng W, Zhang L, Wu YL, Zhang HZ. [The association of metastasis-related indexes of lymph nodes and the prognosis of stage N2b colorectal cancer patients]. Zhonghua Zhong Liu Za Zhi 2018; 40:679-683. [PMID: 30293393 DOI: 10.3760/cma.j.issn.0253-3766.2018.09.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the prognostic value of lymph node metastasis-related indexes in patients with stage N2b colorectal cancer. Methods: Clinicopathologic data of 245 patients with stage N2b colorectal cancer who initially underwent radical operation in Cancer Hospital, Chinese Academy of Medical Sciences between January 2007 and December 2012 were retrospectively analyzed. The prognostic values of several indexes, including number of positive lymph nodes, number of negative lymph nodes, lymph node ratio (LNR) and log odds of positive lymph nodes (LODDS) were analyzed. Results: The 5-year overall survival rate of 245 patients with colorectal cancer was 54.0%, and the 5-year recurrence-free survival rate was 48.5%.Univariate analysis showed that perineural or blood vessel invasion, T stage, postoperative adjuvant therapy, number of positive lymph nodes, number of negative lymph nodes, LNR, and LODDS were significantly associated with the 5-year overall survival of colorectal cancer patients (P<0.05). Multivariate cox regression analysis showed that, number of positive lymph nodes, number of negative lymph nodes, LNR, LODDS were all independent prognostic factors for stage N2b colorectal cancer patients (P<0.05). The areas under the receiver operating characteristic curve (ROC) curves of number of positive lymph node, number of negative lymph nodes, LNR and LODDS were 0.649, 0.667, 0.690 and 0.683, respectively, however, no statistical significance was observed between the number of negative lymph nodes (P=0.622), LNR (P=0.178) or LODDS (P=0.272) and the number of positive lymph nodes. Conclusion: The number of positive lymph nodes, number of negative lymph nodes, LNR and LODDS were all independent prognostic factors for patients with stage N2b colorectal cancer.
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Affiliation(s)
- W Zheng
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - L Zhang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y L Wu
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - H Z Zhang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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Shi HZ, Ji ZS, Zhao HQ, Chen ZL, Zhang HZ. An experimental system for coiled tubing partial underbalanced drilling (CT-PUBD) technique. Rev Sci Instrum 2018; 89:055108. [PMID: 29864811 DOI: 10.1063/1.5029303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
To improve the rate of penetration (ROP) in hard formations, a new high-speed drilling technique called Coiled Tubing Partial Underbalanced Drilling (CT-PUBD) is proposed. This method uses a rotary packer to realize an underbalanced condition near the bit by creating a micro-annulus and an overbalanced condition at the main part of the annulus. A new full-scale laboratory experimental system is designed and set up to study the hydraulic characteristics and drilling performance of this method. The system is composed of a drilling system, circulation system, and monitor system, including three key devices, namely, cuttings discharge device, rotary packer, and backflow device. The experimental results showed that the pressure loss increased linearly with the flow rate of the drilling fluid. The high drilling speed of CT-PUBD proved it a better drilling method than the conventional drilling. The experimental system may provide a fundamental basis for the research of CT-PUBD, and the results proved that this new method is feasible in enhancing ROP and guaranteeing the drilling safety.
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Affiliation(s)
- H Z Shi
- State Key Laboratory of Petroleum Resources and Prospecting, Beijing, China
| | - Z S Ji
- State Key Laboratory of Petroleum Resources and Prospecting, Beijing, China
| | - H Q Zhao
- State Key Laboratory of Petroleum Resources and Prospecting, Beijing, China
| | - Z L Chen
- State Key Laboratory of Petroleum Resources and Prospecting, Beijing, China
| | - H Z Zhang
- State Key Laboratory of Petroleum Resources and Prospecting, Beijing, China
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Wang SY, Li L, Wang SY, Zhang HZ, Huang CX. [Clinicopathologic analysis of 7 cases of histiocytic sarcoma]. Zhonghua Bing Li Xue Za Zhi 2018; 47:293-294. [PMID: 29690671 DOI: 10.3760/cma.j.issn.0529-5807.2018.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
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Zhang HZ, Wang SY. [TFE3 translocation associated epithelioid hemangioendothelioma: report of a case]. Zhonghua Bing Li Xue Za Zhi 2017; 46:429-430. [PMID: 28591998 DOI: 10.3760/cma.j.issn.0529-5807.2017.06.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
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Dai JH, Lin HB, Li X, Wu YY, Zhang HZ, Yu ZX. [Clinical effect of minimally-Invasive surgical-transforaminal lumbar interbody fusion technique associated with percutaneous pedicle screws in micro endoscopy discectomy]. Zhonghua Yi Xue Za Zhi 2017; 97:864-868. [PMID: 28355744 DOI: 10.3760/cma.j.issn.0376-2491.2017.11.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the clinical efficacy between the minimally-Invasive surgical (MIS)-transforaminal lumbar interbody fusion (TLIF) technique associated with percutaneous pedicle screws in micro endoscopy discectomyand MIS-TLIF technique associated with both sides of the lower lumbar spine Wiltse approach in Quadrant channel with treatment of single segment herniation associated with lumbar instability syndrome. Methods: From January 2012 to January 2015, 75 cases that meet the inclusion and exclusion criteria were treated by retrospective study method, which were divided into two groups in Department of Orthopedics, the Affiliated Hospital of Putian University.Experimental group(30 patients) were treated with MIS-TLIF technique associated with percutaneous pedicle screws in microendoscopy discectomy, control group were treated with MIS-TLIF technique associated with both sides of the lower lumbar spine Wiltse approach in Quadrant Chanel.Compare operation time, blood loss, postoperativehospital stay, clinical efficacy, nailing accuracy, fusion rate, postoperative pain scoring of two groups. Results: The blood loss[(102.1±5.5) min vs(103.7±7.7) min, t=-0.586, P>0.05], postoperative blood loss, hospital stay[(44.6±5.2) ml and(57.2±5.3) ml, (7.3±1.6) d and(9.3±1.9) d; t=-5.813, -2.774, P<0.05], JOA score before and after surgery in same group were statistically significant(P<0.05), respectively.Patients of two groups compared with operation time, clinical efficacy, nailing accuracy[group A: 97.5%, group B: 95.7%; χ(2)=3.00, P>0.05.Postoperative 3 month , group A: 96.7%(29/30), group B: 94.3%(33/35; χ(2)=0.79, P>0.05], fusion rate[group A: 96.7%(29/30), group B: 94.3%(33/35), χ(2)=0.79, P>0.05], preoperative JOA score[(20.4±2.4)score and(7.9±1.0), (19.1±2.7)score and(7.8±1.2)score], postoperative JOA score were no statistically significant respectively, P>0.05. JOA score of both groups were statistically significant respectively Before and after operate.Excellent rate: group A; 84.4%(25/30), group B: 80.0%(28/35), χ(2)=0.43, P>0.05. Conclusion: MIS-TLIF technique associated with percutaneous pedicle screws in micro endoscopy discectomy relative to conventional minimally invasive spine surgery had many advantages: minimal damage, operation conveniently, precisely clinical effect, that is a kind of feasible and reliable minimally invasive surgery which is worth promoting.
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Affiliation(s)
- J H Dai
- Department of Orthopedics, the Affiliated Hospital of Putian University, Fujian 351100, China
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Chen CY, Zhang HZ, Jiang ZM, Zhou J, Chen J, Liu L. [Value of MDM2, CDK4 and SATB2 immunohistochemistry in histologic diagnosis of low-grade osteosarcoma]. Zhonghua Bing Li Xue Za Zhi 2017; 45:387-92. [PMID: 27256046 DOI: 10.3760/cma.j.issn.0529-5807.2016.06.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate the value of combined application of MDM2, CDK4 and SATB2 immunohistochemistry in pathological diagnosis of low-grade osteosarcoma. METHODS Forty-seven cases of low grade osteosarcoma, including low grade central osteosarcoma (n=20) and parosteal osteosarcoma (n=27), were selected from Shanghai Jiaotong University Affiliated the Sixth People's Hospital. The clinical, radiography and histopathology were reviewed. The sensitivity and specificity of MDM2, CDK4 and SATB2 immunohistochemistry in the diagnosis of low-grade osteosarcoma were assessed along with an evaluation of their expressions in fibrous dysplasia, desmoplastic fibroma, low-grade fibrosarcoma and other fibrous tumors. RESULTS Low-grade osteosarcoma had protracted clinical course, occurring mostly in elder adults and mainly involving long bones. Radiographic studies showed that low-grade central osteosarcoma had a mainly malignant lytic presentation, however about 5/18 of tumors overlapping with intermediate and benign bone diseases, while parosteal osteosarcoma was characterized by a densely sclerotic malignant appearance. Histologically, low-grade osteosarcomas were characterized by well-differentiated spindle tumor cells, various mature tumor bones and an aggressive growth pattern. The positive expression rates of MDM2 and CDK4 in low-grade osteosarcoma were 74.5% and 55.3%, respectively. Eighty-three percent of low-grade osteosarcoma expressed one or both markers. Low-grade osteosarcoma and fibrous dysplasia were both positive for SATB2, while desmoplastic fibroma, low-grade fibrosacoma and other fibrous tumors were negative for SATB2. CONCLUSIONS Accurate diagnosis of low-grade osteosarcoma should be based on combination of clinical presentation, imaging and histopathology, with immunohistochemistry as a diagnostic adjunct. Positive immunostaining for CDK4 and/or MDM2 supports the diagnosis of low-grade osteosarcoma, but the negative one does not rule out such lesion. The negative expression of SATB2 is helpful to exclude fibrous tumors originating from bone with the exception of fibrous dysplasia.
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Affiliation(s)
- C Y Chen
- Department of Pathology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
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Wang D, Ren GF, Zhang HZ, Yi CY, Peng ZJ. A de novo 2q35-q36.1 deletion incorporating IHH in a Chinese boy (47,XYY) with syndactyly, type III Waardenburg syndrome, and congenital heart disease. Genet Mol Res 2016; 15:gmr-15-04-gmr.15049060. [PMID: 27966732 DOI: 10.4238/gmr15049060] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Reports of terminal and interstitial deletions of the long arm of chromosome 2 are rare in the literature. Here, we present a case report concerning a Chinese boy with a 47,XYY karyotype and a de novo deletion comprising approximately 5 Mb between 2q35 and q36.1, along with syndactyly, type III Waardenburg syndrome, and congenital heart disease. High-resolution chromosome analysis to detect copy number variations was carried out using an Affymetrix microarray platform, and the genes affected by the patient's deletion, including IHH, were determined. However, no copy number changes were observed in his healthy parents. The present case exhibited novel syndactyly features, broadening the spectrum of clinical findings observed in individuals with 2q interstitial deletions. Our data, together with previous observations, suggest that IHH haploinsufficiency is the principal pathogenic factor in the syndactyly phenotype in this study, and that different types of variations at the IHH locus may cause divergent disease phenotypes. This is the first report of the involvement of IHH haploinsufficiency in syndactyly phenotype.
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Affiliation(s)
- D Wang
- Medical Institute of Pediatrics, Qilu Children's Hospital of Shandong University, Jinan, Shandong, China.,Institute of Cardiovascular Disease, General Hospital of Jinan Military Region, Jinan, Shandong, China
| | - G F Ren
- Department of Pediatrics, Qilu Children's Hospital of Shandong University, Jinan, Shandong, China
| | - H Z Zhang
- Medical Institute of Pediatrics, Qilu Children's Hospital of Shandong University, Jinan, Shandong, China
| | - C Y Yi
- Children's Medical Laboratory Diagnosis Center, Qilu Children's Hospital of Shandong University, Jinan, Shandong, China
| | - Z J Peng
- Department of Pediatrics, Qilu Children's Hospital of Shandong University, Jinan, Shandong, China
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Jiang ZM, Zhang HZ. [Diagnosis difficulties and criteria for classification of chondrosarcoma]. Zhonghua Bing Li Xue Za Zhi 2016; 45:597-600. [PMID: 27646886 DOI: 10.3760/cma.j.issn.0529-5807.2016.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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Zhang HZ, Chen Q, Wu GF. [Clinical application of contrast-enhanced ultrasound in the differential diagnosis of properties of patients with Hashimoto's thyroiditis and thyroid nodules]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:1243-1245. [PMID: 29798340 DOI: 10.13201/j.issn.1001-1781.2016.15.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Indexed: 06/08/2023]
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Yang JX, Guo QJ, Yang J, Zhou XY, Ren HY, Zhang HZ, Xu RX, Wang XD, Peters M, Zhu GX, Wei RF, Tian LY, Han XK. Red mud (RM)-Induced enhancement of iron plaque formation reduces arsenic and metal accumulation in two wetland plant species. Int J Phytoremediation 2016; 18:269-277. [PMID: 26505322 DOI: 10.1080/15226514.2015.1085830] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Human activities have resulted in arsenic (As) and heavy metals accumulation in paddy soils in China. Phytoremediation has been suggested as an effective and low-cost method to clean up contaminated soils. A combined soil-sand pot experiment was conducted to investigate the influence of red mud (RM) supply on iron plaque formation and As and heavy metal accumulation in two wetland plant species (Cyperus alternifolius Rottb., Echinodorus amazonicus Rataj), using As and heavy metals polluted paddy soil combined with three rates of RM application (0, 2%, 5%). The results showed that RM supply significantly decreased As and heavy metals accumulation in shoots of the two plants due to the decrease of As and heavy metal availability and the enhancement of the formation of iron plaque on the root surface and in the rhizosphere. Both wetland plants supplied with RM tended to have more Fe plaque, higher As and heavy metals on roots and in their rhizospheres, and were more tolerant of As and heavy metal toxicity. The results suggest that RM-induced enhancement of the formation of iron plaque on the root surface and in the rhizosphere of wetland plants may be significant for remediation of soils contaminated with As and heavy metals.
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Affiliation(s)
- J X Yang
- a Center for Environmental Remediation, Institute of Geographical Sciences and Natural Resources Research , Chinese Academy of Sciences , Beijing , P. R. China
| | - Q J Guo
- a Center for Environmental Remediation, Institute of Geographical Sciences and Natural Resources Research , Chinese Academy of Sciences , Beijing , P. R. China
| | - J Yang
- a Center for Environmental Remediation, Institute of Geographical Sciences and Natural Resources Research , Chinese Academy of Sciences , Beijing , P. R. China
| | - X Y Zhou
- a Center for Environmental Remediation, Institute of Geographical Sciences and Natural Resources Research , Chinese Academy of Sciences , Beijing , P. R. China
| | - H Y Ren
- a Center for Environmental Remediation, Institute of Geographical Sciences and Natural Resources Research , Chinese Academy of Sciences , Beijing , P. R. China
| | - H Z Zhang
- a Center for Environmental Remediation, Institute of Geographical Sciences and Natural Resources Research , Chinese Academy of Sciences , Beijing , P. R. China
- b University of Chinese Academy of Sciences , Beijing , P. R. China
| | - R X Xu
- a Center for Environmental Remediation, Institute of Geographical Sciences and Natural Resources Research , Chinese Academy of Sciences , Beijing , P. R. China
| | - X D Wang
- c College of Resource Environment and Tourism , Capital Normal University , Beijing , P. R. China
| | - M Peters
- a Center for Environmental Remediation, Institute of Geographical Sciences and Natural Resources Research , Chinese Academy of Sciences , Beijing , P. R. China
| | - G X Zhu
- a Center for Environmental Remediation, Institute of Geographical Sciences and Natural Resources Research , Chinese Academy of Sciences , Beijing , P. R. China
- b University of Chinese Academy of Sciences , Beijing , P. R. China
| | - R F Wei
- a Center for Environmental Remediation, Institute of Geographical Sciences and Natural Resources Research , Chinese Academy of Sciences , Beijing , P. R. China
- b University of Chinese Academy of Sciences , Beijing , P. R. China
| | - L Y Tian
- a Center for Environmental Remediation, Institute of Geographical Sciences and Natural Resources Research , Chinese Academy of Sciences , Beijing , P. R. China
- b University of Chinese Academy of Sciences , Beijing , P. R. China
| | - X K Han
- a Center for Environmental Remediation, Institute of Geographical Sciences and Natural Resources Research , Chinese Academy of Sciences , Beijing , P. R. China
- b University of Chinese Academy of Sciences , Beijing , P. R. China
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Yu YL, Shao YK, Ding YQ, Lin KZ, Chen B, Zhang HZ, Zhao LN, Wang ZB, Zhang JS, Tang ML, Mei J. Decellularized kidney scaffold-mediated renal regeneration. Biomaterials 2014; 35:6822-8. [PMID: 24855960 DOI: 10.1016/j.biomaterials.2014.04.074] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Accepted: 04/22/2014] [Indexed: 01/04/2023]
Abstract
Renal regeneration approaches offer great potential for the treatment of chronic kidney disease, but their availability remains limited by the clinical challenges they pose. In the present study, we used continuous detergent perfusion to generate decellularized (DC) rat kidney scaffolds. The scaffolds retained intact vascular trees and overall architecture, along with significant concentrations of various cytokines, but lost all cellular components. To evaluate its potential in renal function recovery, DC scaffold tissue was grafted onto partially nephrectomized rat kidneys. An increase of renal size was found, and regenerated renal parenchyma cells were observed in the repair area containing the grafted scaffold. In addition, the number of nestin-positive renal progenitor cells was markedly higher in scaffold-grafted kidneys compared to controls. Moreover, radionuclide scan analysis showed significant recovery of renal functions at 6 weeks post-implantation. Our results provide further evidence to show that DC kidney scaffolds could be used to promote renal recovery in the treatment of chronic kidney disease.
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Affiliation(s)
- Y L Yu
- Anatomy Department, Wenzhou Medical University, Wenzhou 325035, China; Institute of Bioscaffold Transplantation and Immunology, Wenzhou Medical University, Wenzhou 325035, China
| | - Y K Shao
- School of the First Clinical Medical Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Y Q Ding
- Institute of Neuroscience, Wenzhou Medical University, Wenzhou 325035, China
| | - K Z Lin
- Institute of Bioscaffold Transplantation and Immunology, Wenzhou Medical University, Wenzhou 325035, China
| | - B Chen
- Institute of Bioscaffold Transplantation and Immunology, Wenzhou Medical University, Wenzhou 325035, China; Department of Radiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 32000, China
| | - H Z Zhang
- Department of Nuclear Medicine, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 32000, China
| | - L N Zhao
- Anatomy Department, Wenzhou Medical University, Wenzhou 325035, China; Institute of Bioscaffold Transplantation and Immunology, Wenzhou Medical University, Wenzhou 325035, China
| | - Z B Wang
- Institute of Bioscaffold Transplantation and Immunology, Wenzhou Medical University, Wenzhou 325035, China
| | - J S Zhang
- Anatomy Department, Wenzhou Medical University, Wenzhou 325035, China; Institute of Bioscaffold Transplantation and Immunology, Wenzhou Medical University, Wenzhou 325035, China
| | - M L Tang
- Anatomy Department, Wenzhou Medical University, Wenzhou 325035, China; Institute of Bioscaffold Transplantation and Immunology, Wenzhou Medical University, Wenzhou 325035, China
| | - J Mei
- Anatomy Department, Wenzhou Medical University, Wenzhou 325035, China; Institute of Bioscaffold Transplantation and Immunology, Wenzhou Medical University, Wenzhou 325035, China; Institute of Neuroscience, Wenzhou Medical University, Wenzhou 325035, China.
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Zhang HZ, Wu W, She L, Shi XQ, Wang XD, Zhang X. Risk prognosis factors of chronic subdural hematoma evacuated by the novel YL-1 hollow needle aspiration drainage system. J Neurosurg Sci 2014; 58:29-36. [PMID: 24614790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
AIM The novel YL-1 hollow needle aspiration drainage system is an effective minimally invasive treatment in chronic subdural hematoma (CSDH). In order to find the risk prognosis factors of chronic subdural hematoma (CSDH) performed by the novel YL-1 hollow needle aspiration drainage system, a logistic analysis of postoperative results was performed. METHODS One hundred ninety-four cases of chronic subdural hematoma in a period of 7 years since 2004 were collected. According to the postoperative rehabilitation effect of nerve function, the patients were divided into good prognosis group and poor prognosis group. The patients' indexes of the two groups with age, blood coagulation function, location of the hematoma, hematoma volume, admission Markwalder's grade, clinical symptoms were tested by the chi-square test, then the statistically significant factors were selected into the establishment of the Logistic regression model and further analysis of multiple factors were made on chronic subdural hematoma prognostic implications. RESULTS Retrospective analysis was performed for differentiating good prognosis group (N.=174) and poor prognosis group (N.=20). Univariate analysis after the chi-square test showed that there were significant differences in gender, age, coagulation function, hematoma position, hematoma size, initial Markwalder's neurological grade, clinical symptoms and signs. Logistic regression analysis showed that chronic subdural hematoma prognostic factors sorted by odds ratio were as follows: high Markwalder's grade, male, coagulopathy, bilateral hematoma, senior citizens. CONCLUSION We used logistic regression analysis to identify the risk prognosis factors of chronic subdural hematoma (CSDH) performed by a novel YL-1 hollow needle aspiration drainage systems, and found that high preoperative Markwalder's gradie, male, coagulopathy, bilateral hematoma, senior citizens will poorly affect prognosis in CSDH.
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Affiliation(s)
- H Z Zhang
- Department of Neurosurgery, Clinical Medical College Yangzhou University, Yangzhou, Jiangsu Province, China -
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Fox D, Zhou YB, O'Neill A, Kumar S, Wang JJ, Coleman JN, Duesberg GS, Donegan JF, Zhang HZ. Helium ion microscopy of graphene: beam damage, image quality and edge contrast. Nanotechnology 2013; 24:335702. [PMID: 23883614 DOI: 10.1088/0957-4484/24/33/335702] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A study to analyse beam damage, image quality and edge contrast in the helium ion microscope (HIM) has been undertaken. The sample investigated was graphene. Raman spectroscopy was used to quantify the disorder that can be introduced into the graphene as a function of helium ion dose. The effects of the dose on both freestanding and supported graphene were compared. These doses were then correlated directly to image quality by imaging graphene flakes at high magnification. It was found that a high magnification image with a good signal to noise ratio will introduce very significant sample damage. A safe imaging dose of the order of 10(13) He(+) cm(-2) was established, with both graphene samples becoming highly defective at doses over 5 × 10(14) He(+) cm(-2).The edge contrast of a freestanding graphene flake imaged in the HIM was then compared with the contrast of the same flake observed in a scanning electron microscope and a transmission electron microscope. Very strong edge sensitivity was observed in the HIM. This enhanced edge sensitivity over the other techniques investigated makes the HIM a powerful nanoscale dimensional metrology tool, with the capability of both fabricating and imaging features with sub-nanometre resolution.
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Affiliation(s)
- D Fox
- School of Physics and CRANN, Trinity College Dublin, Dublin 2, Republic of Ireland
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Zhang HZ, Xu F, Seashore M, Li P. Unique genomic structure and distinct mitotic behavior of ring chromosome 21 in two unrelated cases. Cytogenet Genome Res 2012; 136:180-7. [PMID: 22398511 DOI: 10.1159/000336978] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/16/2012] [Indexed: 12/26/2022] Open
Abstract
A ring chromosome replacing a normal chromosome could involve variable structural rearrangements and mitotic instability. However, most previously reported cases lacked further genomic characterization. High-resolution oligonucleotide array comparative genomic hybridization with single-nucleotide polymorphism typing (aCGH+SNP) was used to study 2 unrelated cases with a ring chromosome 21. Case 1 had severe myopia, hypotonia, joint hypermobility, speech delay, and dysmorphic features. aCGH detected a 1.275-Mb duplication of 21q22.12-q22.13 and a 6.731-Mb distal deletion at 21q22.2. Case 2 showed severe growth and developmental retardations, intractable seizures, and dysmorphic features. aCGH revealed a contiguous pattern of a 3.612- Mb deletion of 21q22.12-q22.2, a 4.568-Mb duplication of 21q22.2-q22.3, and a 2.243-Mb distal deletion at 21q22.3. Mitotic instability was noted in 13, 30, and 76% of in vitro cultured metaphase cells, interphase cells, and leukocyte DNA, respectively. The different phenotypes of these 2 cases are likely associated with the unique genomic structure and distinct mitotic behavior of their ring chromosome 21. These 2 cases represent a subtype of ring chromosome 21 probably involving somatic dicentric ring breakage and reunion. A cytogenomic approach is proposed for characterizing the genomic structure and mitotic instability of ring chromosome abnormalities.
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Affiliation(s)
- H Z Zhang
- Department of Genetics, Yale School of Medicine, New Haven, CT 06520-8005, USA
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Behan G, Zhou D, Boese M, Wang RM, Zhang HZ. An investigation of nickel cobalt oxide nanorings using transmission electron, scanning electron and helium ion microscopy. J Nanosci Nanotechnol 2012; 12:1094-1098. [PMID: 22629901 DOI: 10.1166/jnn.2012.4260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Nickel cobalt oxide alloy nanorings have been synthesized using a wet chemistry method. Standard characterization techniques such as transmission electron microscopy (TEM) and scanning electron microscopy (SEM) have been used to characterize the nanorings. We, however, also examined the nanostructures in the helium ion microscope (HIM) and employed backscattered ion spectroscopy to determine thickness and composition of the nanostructure. The HIM provides complementary information of the nanostructures and the viability of using it as a tool for magnetic nanoparticle characterization was demonstrated by comparing the results from all three microscopes.
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Affiliation(s)
- G Behan
- School of Physics and CRANN, Trinity College Dublin, Dublin 2, Republic of Ireland
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Nakagawa N, Aikawa P, Zhang HZ, Correia C, Pazzeti R, Valente Barbas C, Mauad T, Silva E, Sannomiya P. Effects of low and high tidal volume and pentoxifylline on intestinal blood flow and leukocyte-endothelial interactions in mechanically ventilated rats. Crit Care 2012. [PMCID: PMC3363534 DOI: 10.1186/cc10723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Zhang HZ, Tian HQ, Du DH, Wang GJ, Yan XX, Liu H, Zhou GZ, Fu XA, Yu YX, Yu GQ, Liu HX, Zhang FR. Analysis of ATP2C1 gene mutations in Chinese patients with Hailey-Hailey disease. Clin Exp Dermatol 2011; 37:190-3. [PMID: 21883398 DOI: 10.1111/j.1365-2230.2011.04155.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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48
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Duan Y, Zhang HZ, Bu RF. Correlation between cellular phone use and epithelial parotid gland malignancies. Int J Oral Maxillofac Surg 2011; 40:966-72. [PMID: 21474287 DOI: 10.1016/j.ijom.2011.03.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2010] [Revised: 01/23/2011] [Accepted: 03/04/2011] [Indexed: 12/01/2022]
Abstract
The authors investigated the association between cellular phone use and epithelial parotid gland malignancy. The subjects were 136 cases who were treated for this condition at the authors' hospital from January 1993 to March 2010, and 2051 controls who did not have salivary gland tumours and were admitted to the oral and maxillofacial surgery department during the same period. Logistic analysis was used to examine the relationship between cellular phone use and risk of epithelial parotid gland malignancy and mucoepidermoid carcinoma. Overall, the frequency of cellular phone use was not significantly associated with epithelial parotid gland malignancy. Female gender, advanced age, married status, high income, and smoking were associated with an elevated risk of epithelial parotid gland malignancy, especially mucoepidermoid carcinoma. Residence in a rural area was associated with reduced risk of epithelial parotid gland malignancy. The results suggest a possible dose-response relationship of cellular phone use with epithelial parotid gland malignancy. The authors suggest that the association of cellular phone use and epithelial parotid gland malignancy and mucoepidermoid carcinoma requires further investigation with large prospective studies.
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Affiliation(s)
- Y Duan
- Oral and Maxillofacial Surgery Department, Chinese PLA General Hospital, Beijing, China
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Abstract
Due to its low beam current and charge compensation mechanism He-Ion scanning microscopy is a very promising tool for imaging biological cells. However, to obtain relevant information, the method used for sample preparation is also critical. In this work, we have used a Carl Zeiss Orion Plus helium-ion microscope to study the effect of sample gold coating on the morphology of human colorectal adenocarcinoma Caco2 cells. The fixative glutaraldehyde was used and the selective gold coating of the samples was investigated. A comparative study with standard scanning electron microscopy is presented.
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Affiliation(s)
- D Bazou
- Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) and CRANN Advanced Microscopy Laboratory, Trinity College Dublin, Ireland
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Zhang HZ, Lin XG, Hua P, Wang M, Ao X, Xiong LH, Wu C, Guo JJ. The study of the tumor stem cell properties of CD133+CD44+ cells in the human lung adenocarcinoma cell line A549. Cell Mol Biol (Noisy-le-grand) 2010; 56 Suppl:OL1350-OL1358. [PMID: 20937222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2009] [Accepted: 07/29/2010] [Indexed: 05/30/2023]
Abstract
We studied the tumor stem cell properties of the CD133+CD44+ subpopulation in the human lung adenocarcinoma cell line A549. A549 cells were classified into subpopulations based on differential expression patterns for CD133 and CD44. Cells from different subpopulations were cultured and subcutaneously injected into 32 nude mice. Our results as following, (1) The majority of A549 cells died, whereas only about 4.11% of cells divided and proliferated to form cell clones. (2) The expression of CD133 and CD44 in proliferative cancer cells was statistically significantly different from that in normal A549 cells (p < 0.001). (3) Cell proliferation in group A (CD133+CD44+) was the fastest among all groups. Cell proliferation in A549 cells was slower than in group A but faster than in groups B (CD133-CD44-), C (CD133-CD44+), and D (CD133+CD44-). (4) The tumorigenic capacity in cells from group A was significantly higher than that in cells from groups B (p<0.001), C (p<0.001) and D (p<0.04). In conclusion, CD133+CD44+ cells in the adenocarcinoma cell line A549 have expressive significant cancer stem cell properties with continuous proliferative capacity and differentiation potential.
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Affiliation(s)
- H Z Zhang
- Cardio-Thoracic surgery of the Sun Yat-sen Memorial Hospital, Sun Yat-sen university, Guangzhou, China
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